[VOL-4089] Documentation for the required BNG/RG tools

Change-Id: I8d3d539ad40472b9daf2d3a5872257171a6c489a
diff --git a/.gitignore b/.gitignore
index 0b1f37c..4e92217 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,3 +10,4 @@
 xos/_book
 venv-xosdocs
 .DS_Store
+.idea/